Originally posted November 5, 2025 - Margaret Henderson
The Radon Program of the Colorado Department of Public Health and Environment has its radon data posted on the Colorado Environmental Public Health Tracking website current to 2024. Margaret Horton, Program Coordinator for the Colorado Radon Program, explained their success in making current radon data available to the public, saying “We partner with our Environmental Public Health Tracking program to process the data and maintain the dashboard.”
On the site, home radon tests are mapped and shown by county from the period 2005 – 2024. At bar chart also shows results by county with the per centage of samples over the action level given. Of the test results currently posted, 46.9% are above the action level of 4 pCi/L. A tabular form shows mean and maximum test results. The data may be downloaded from the site.
To visit the site, see https://coepht.colorado.gov/radon-data
United States